Molding machine



May 26, 1925.

v 1,539,234 E. O. BEARDSLEY ET AL I MOLDING MACHINE Filed NOV. 6, 1922 3 Sheets-Sheet 1 May 26, 1,925. 1,539,234

.E. O. BEARDSLEY ET AL MOLDING MACHINE Filed Nov. 6, 1922 3 Sheets-Sheet 2 3 Sheets-Sheet E. O. BEARDSLEYET Al;

MOLDING MACHINE Filed Nov, 6, 192

May 26, 1925 gmiwlilvislj exaetdescription.

Patented May 26, 1925 UNITED jsT r s PATEN r oFFIcEQ 31.1mm o.- BfEARD'sLEY AND WALTER F. PIPER, or cHIcAco, nmnolsnssmnons T0 v THE BEARDSLEY a rmen COMPANY, or cmcneo, :mnmozsn conrons'non or ILLINOIS. Y

. MOLDING MACHINE.

Application filed November '6, 1922. Serial Nc. 599,191.

To all whom it may concern;

- Be it known that we, 'ELMER O. BEA Ds- Lay-and \VALTER Fnlmcis PIPER, both citi- Zens. of the United States, and residents of Chicago, in the county' of Cookand State of Illinois, have invented certain new'and useful Improvements in Molding Machines, ofwhich the followingis a-full, clear, and

. The invention relates to molding machines. V

r In making niolds by high speed sand pro- I jectors, the flasks are usually. overfilledto insure the complete-fillingthereof and the excess is stricken oif by a'bar. This excess is considerable in volume,

V V particularly where the flasks are rapidly filled, v as is a the case when rotary high speedsandpro jector s are used. -One 'objeet of the" invention is to' provide means for feeding the strike-off sand back to the molding ma-' chine. r

, Another objectoi? the .inv"ention is to provide improved, means for dellvermg flasks toand from the sand proj e'ctors to facilitate the work of the machine and toincre'ase its output. 5

Other objects of the invention will ap- *pear from the detailed description;

, The invention consists heseyeral novel features hereinafter set forth and more par- 'ticularly' defined by claims at tlie conclusion *he'reof.'""

' In the drawings: Fig. '1 1s a'plan of a qilacllllle embodying theinvention; Fig. 2',

isafside elevation. Fig. 2 is a 'detail of I the elevator-chain and buckets. Fig. 2 is a is a side'elevation-ot"thegearing "for pro- F1g.,6 is 'a sect'lon on sectiononiine 2 -2 of I Fig 3 is a fseeti'on on line 3&3 of Fig. 4 is 3a section on linefl4'4 of Fig.1.: Fig. '5

pelli'ng the machine. line 6-6 of Fig. 1.

Hie-invention is exemplified vin a structurewhiclrcomprises 'a truck mounted upon wheels adaptedto trarelpn rails la d .1n.

he molding robin floor;" a'inolding machine of'the projectortype which is mounted on thetruck; conveying and elevating mechanism. for delivering'santl from alongitw chine to the projector on"tl1e'truck; and

With sand.

' The truclcframe comprises sides .10 and pipes 12 and 13. vPipe 12 is secured to said frame-sides by U-holts1t and pipe 13 is secured to said sides by U-bol'ts 15.f The rear portions of ,the 'frame-sidespf the 11 which are rigidly secured togetherby 1' truck arealso cross-connected by a 'plate or, r bar 1G wl1i'eh isbolte'd to'the frame-sides as at 17 (Fig. The front of the truck is carried by a pair of traction wheels 21 which hayetoothed peripheries to. engage correspondingly toothed portions 23 of rails 24 which are set into the flooinotthe mold:

ing room. The rear of the truck is sup A shaft '26 extends fthrougli pipe 13, and

. and adjacent the ifront thereof;: so that the projector willhe moyable;horizontally over ported by wheels27 Onstud-aXIe S 28 which are carried by thefframe-sides10 and 51 1 keyed at its endsto thehuhs of thetraetionwheels so that'they will. rotatel together and jevenly propel, botirsides pf thema- I chine;

V Thesandprojector or' rnolding machine I illustrated is substantiallyl'o f the c onstruction eichibited in Patent Nog 1,408,493, dated. "March. ,7, 1922, and comprises a supporting standard fixed'on. the" truck, a; jib tipiyi oted to the standard so. as to swing. hor-.-- izontally, errant- 15. piyo't'ed to theouteriend of thei jib, 3 a sand? projector :46 containing a rotor driven by an electric motor 47 which is. mounted to.- swing I horizontally with the M11145, aivibratory .conveyor-chuterg con-- taining a riddle 4:8,and mounted to] swing withnj'ib heltfiflmoul ited to swing with said arm and for feeding sand: from chute 48' to the projectonjandfa case-49, containing mechanism forl-yibratingitlie chuteAS and ineluding'an electric moton, all of. which may be of the conjst ru'etion set forthin said patent, to which reference inz y-be had for a more detailed descriptipn thereof. Stand aid-35 is-disposed; at one sidefot the.truckflasks adjacent tlieqcenter of the truck.

"Standard 351is' clamped toi'pipe 13 by U- bolts 3? andjholted {to-a bracket-36 which" is secured to'a standard 60. This mechanism exemplifies a sand projector which is mounted on the truck and is movablelaterally. so as todischarge sand into'all portions'of flasks below the projectonj The sand is supplied to the projector from a pile on the floor ahead offthetruck by a jcross-conveyor consisting offa screw 54 on a cross-shaft55 An inclined trough-plate 58 in the rear of the conveyor-screw cooperateswvith' the latter :to' direct sand to one,

side of the machine. Plate 58 issecured'to lower rear sprocket165.

ricd bya shaftr63 which is, held in staud ard 60,-the lower end of which is secured to frame-side 10; Sprocket 64 is carried by a andjsupportcdfrom frame-pipe 13 by U-bolt clamps '57. Conveyor-screw 54 and platebS terminate inwardly of frame 'side10'and a sand elevator 15 disposed betweenone end of the conveyor and. said frame-side; 'This'ele-f vator comprises an endles's chain'm59 and buckets 61 proj-ectingfrom'one' side of the chain. Chain 59 passes around a. drivesprocket 62which is fixed to :shaft and elevated idler sprockets 63 and 64 and a shaft 66 which'is carried by a leve'r67. Said lever is pivoted to a standard fiO and.i s 0p erated by va tension device; 67 to cause sprocket 64 to keep the elevator chain taut.

Standard. is secured to frame-side'- 10 by U-bolts '68 andtostandard 60' by a bracket- 69. The-reach of th-e elevatorbetween sprockets 63 and 64; extends over the; inner; end of conveyor-chute 48, so that theelevator. buckets will discharge the sand directly into. the chute. ,Tlns construction exemplities mechanism for conveying sand from a pile in front of the truck to on-esidethereof and elevatingit for projectoron the truck.-

I An electric motor 70, is secured'on framedeliveryto' the side 10 of the truck frame and drives the:

sand'conveyor and elevator jand tlie; propelling mechanism for the truck .i Shaft-z55 of conveyor 54 is driven from said motor-bye pinion 71 on the motor shaft, a gear72. meshing 'with, pinion/Z1 and mounted onzastud 73 carried by fframc-side 10,- t 'pllllOIL74 which. is rigid with g'ear, 72 and a ,gear 7 5 meshing with pinionv 7 1 andfixcd to one end of na'ft 55; The elevator is driven by sprocket 62 which is fixed 'tof'shaft '55. r The traction-wheels are {driven to propel the truck to cause it to progressively advance into the sand pile, by an eccentric pin76;on'

one end of shaft, 55', a pawl 78pivoted-toand operatedby 'saidpin a ratchet-wheel 79 engaged by said pawl. and a pinionSO which is,

rigid with said ratchet. and rotateson a stud .81 on frame-side. 11. Pinion-SO has teeth conforming to the. teeth on the traction wheels 21 and engages one of them. the other being driven through cross-shaft 26. A dog" 8:? prevents rctractionbf ratchet 79.

- A desideratum in the operation Ofllllgll Sprocket (33 is ca1:-.

cured tothe lower endo't A bevelled gear 102 is fixed which 105*on a shaft 106.'

speed sand projectors is to deliver the flasks into-and out of the position in which they are filled by the projector with facility-to increasethe work of the machine; For this purpose,- a rotatable carrier D is provided. A series of flask-supports 84 are supported "on this carrier to bring flasks in rotativc suc cession into position to be filled-and. so that a flask may be placed on the support for dc-i livery to the projector and a filled flask may be removed from its support while another ffl'ask is being filled. This rotatable carrier'is formed of a disk of boiler plate 85 which is fsecured toa socket or housing 86. Housing 1 86 is sustained so it is horizontally rotatable by "roller-bearings87 which are carried by a hollow standard 88 which is secured by bolts 89 to the cross-bar 16.01 the truck frame. A roller 90 onan axle 91 insaid standard is adapted to ride on a central rail 92 to render the standard, which supports the carrier,

vertically rigidL .'l he'marginal portion of is carried b a'hearin 101 with the r-1nggear97vto I] no from sprocket 65 which is driven by the elevator chain 59; A'sprocket .103fixed to r'o tate with sprocket '65 drives .a chain 10stv passes around and drives a sprocket Said "shaft 1s supported i-n-a bearing 107 formed in frame-side 10 and-drives-a bevelled gear 108 which meshes 'with bevelled gear 102. This gearing exemplifies mechanism .for continuously rotating the flaskecarrier. Being continuously driven, this CaIfIJGI WIIl deliver the flasks placed 011 the supports 84 to the space beneath. the convenient range of thesand proje'ctor i'n rotati've s uccessionand also carry 'themaWay, As aresult, while, one flask is beingfilled by the projecto1", ouc or more cmpty'flasks can-be placed on the supports rotating towards the projector. At the same time, an operator may strike off the flask which has been previously filled and can a move that flask. This construction excurplifies driving, mechanism for the carrier which delivers, the flasks to-and from the projector.

'The carrier,d'isk 85 also receives the c.'\'- ress sand which .is stricken from the filled flask and the spill fronrthe projector. The. operator usually strikes the. sanzl from the flask as soon as it has passed to the right handQside of the machine and before removing the flask from its support 84. The

- strike-oil sand-falls on disk 85 so that it 'will rotate therewith. In 1 its rotation 1 with the disk the sand; will engage stationary guidestrips 110-, 11-1. Guide 110 is 'resilientnnd flasksupports 84in their-rotation to' permit said stems topass' between guides 1'10 and" l1l-.v-,--Theseguides directtliejsand to that P .portion' of t-he'car-rier d isk=-'yvhich is-adja- 'cent' irame-side a drherear f thejsa nd, v elevator. Rake-bars -'=1;1'5 are secured to a bar 116. Which-is suspended at'its rear-end b'ya the forwardly and horiirm'tally' moving" bnckets Glywhich' will reconvey the .sand

follows: When the machine is in'us'e, thetruckiwillbeiadvanced' slowly into the-sand- "inthe' pile in j'fro'nt ofthe machine and-one link- 11-7 which-is-hung on frame-side 10 and has its front end connected toa'crank 118 on Y the shaft of'spro'cket 65: "Theseharsrake or' toss the' sandv from disk 85 into-the path of from the disk-with-the sand from the coniveyorv-screw- 54 upwardly for delivery to the projector, This construction 1 exemplifies" means for catchingthe' spilt from the'-p1'o-. ectorl nd the strike-off sand from the filled .ilnsks I and delivering it 1 to the sand supply for the projector-5 so' that it will heagainde l'iveredito the-projector. This results iir v, y

251 11 a"ma'chin'e for making molds, the

avoiding the loss of the use of this sanddur mg-arun oi the machine;

= =Ihejope1-ation: of the machine will 'be as end of the screw '54 will deliversand to the free side, of the elevator buckets The:

latter will 'l-iftgjthe-xsand inregular volume and] deliver; it into the conveyor-chute 48 which will delivelfi-it onto" the feed-belt 50 [for delivery into. the casing of the sand projectorx Carrier B Will be continuously r0,-

fltateid." The operatorwill place empty flasks 'upon the supports 84 hile they are moving forwardly with the carrier. ".As each flaskreachesza point adjacent and beneath the projecto the operator will shift the project p into the flasks and fill them. As the flasks are moving rearwardly and after-they. have been filled, {an operator strikes off the sand which 't' ftil'l be deposited "on the carrier disk. and "their" removes completed" molds from the carrier sfo'that the supports may receive:

the ,cinptyflasks. Considerable sandis dis- .chargedfby'ftlie projector outside of the flasks and the; "spill, together with the strike oil sand, illhe caught by the carrier disk and delivered tothe sand elevator, so that the-sand he again used in filling flasks.

The operation may be continuously cars ried on, because ofthe continuously moving The invention 'sand, p rojector whichf'is "provided with mechanism for keepin the projector sup successively in o" and to successively eject wads of sandat high speed mechanism for delivering fiasksto and from molds may 1 be quickly produced and so that the machinewill haven maximum output;

'which".comprises means fordelivering the \SlTiIlKG-Oll Safi'd al1(l ;$plll hack. to the projec tor; v'l1ich includes a rotary disk for feedingszind to the elevator and in ,\vhicli thec ross conveyor sc reiv d'elivers the sand to 't'l'ie fi'eesiide ofj elevator-buckets which are entirely siipportcdat theother side, I u *lhe' invention is not to be'understo'od as r'estrictedto the details set forth, since these 1." In a machine nap making molds, the con'rihinationof a sand pro ector,mechanism 9 to' o erate the ipr i tt r o :fdrcibly delivre sand into flasks, mechanism for feeding sand to the' proj ector,' 1'nean s for conveying flasks to the projector, and for driving said conveying" mechan sm tobring flasks.

out i of posit on heneath the'pr0je'cton1 combination of a sand projector, mechanism for feeding sand'f'to theprojector; meansto veying flasks the projector, and "mechanism for driving saidconveying mechanism position beneath the projector. I

3.Inj'a .J'nachinefor making molds, the i Y combination-of asand Iirojectog-inechanism for feeding sand to the projector, means to movably support the v.projector'so it may 1 be manuallyshifted over flasks, means for conveying a, seriesfoi flasks to the projec tor, and mechanism for driving said conveying mechanism to successively bring flasks into positionbeneath the projector;

4. 'In a, machi' e .for making molds, the

combination of a sand projector mechanism. to operate'the projector to forcibly deliver 1 1 sand into flasks, mechanism for feeding sand to the pro ector, a rotary conveyor .for 2 flasks, and mechanism for drivingsaid con veyor to successively bring flasks-thereon nto and out of filhng position beneath the.

projector.

'-5. In a machinefor making molds l-the 5 combination of asand projector, means to movably supportthe'projector'so it can be manually shifted over a flask; mechanism for feeding sand to the projector, a rotary conveyor for flasks and mechanism for driving brin' flasks into -an d out of 40 to operate the projector to forcibl said conveyor to successively bring a flask thereon into and out of filling position be-' neath the projector. 6. In a machine for making molds, the

combination of a sand projector mechanism to operate the projector to forcibly deliver sand into flasks, mechanism for feeding sand to the projector, a rotar Y conveyor adapted to hold a series of flasks, and mechanism for driving said carrier to successively bring flasks thereon into and .out of filling position beneath the'projector.

7. In a machine for making molds, the combination of a sand projector mechanism to operate. the projector to forcibly deliver sand into flasks, mechanism for feeding sand to the projector,a conveyor for successively delivering flasks to and from the projector, and mechanism for continuously drivingsaid conveyor. I

8. In a machine for making molds, thecombination of a sand projector mechanism 1o operate the projector to 'forciblv deliver sand into flasl (s,:mechanism forfeeding sand f to the pro ector, a rotary -conveyor for delivering flasks to and from the projector-in 'rotative succession, and mechanism for continuously driving said conveyor.

9. In a machine formaking molds, the

combination ofa sand projector, lllQlIlS'iO movably support the projector 'so it can be shifted over a flask, mechanism for feeding sand to the projector, a rotary conveyor adapted to hold a series of flasks and for delivering them to and from the projector n rotative succession, and mechanism for continuously driving said conveyor.

10. In a machine for making molds, the

combination of a sand projector mechanism deliver sand into flasks, mechanism for feet ing sand to the projector, aconveyor. adapted to hold a plurality of flasks and carry them in succession to and from the filling position beneath the projector, and mechanism for.

driving the conveyor connectedto be driven with-the sand feeding means.

11. In a machine for making molds, the combination of a sand projector, mechanism for feedin sand to the ro'ector a rotary.

e P a conveyor adapted to hold a plurality of flasks and carry them in rotative succession to and. from the filling position beneath the projector, and mechanism for driving. the conveyor, geared to and driven by the sand-feed means:

12. In a machine for making molds, the combination of a sand projector, mechanism for feeding sand to the-projector comprising an. elevator, aconveyor adapted to hold a plurality of flasks and carry them in successsion to and from the projector, and mechanism for driving the carrier, geared to'and driven bysaid elevator.

13,111 a machine for making molds, the

ing said convevoi-"operable Withthe procombin'ationof a truck, mechanism forv propelling the truck, a sand projector mounted on the truck mechanism to operate the .projector to forcibly deliver sandinto flasks, means for. feeding'sand. to the projector, a conveyor movable with thetruck filling position below the projector, and

mechanism for driving said conveyor.

and adapted to hold a plurality of flasks and successively deliver'thein into and out of 14. In a machinefor making molds, the

combination of a truck, mechanism for propelling the truck, a sand pro ector mounted on the truck. mechanism to operate the pro-:- S0

jector to forcibly deliver sand into 'flasks, means for. feeding sandto the projector, a conveyor movable with and adapted to hold a plurality of flasks and 'successivelydeliver them into and out of filling position below the projector, and mechanism for drivpelling mechanism.

15. In a machine for making molds, the

combination of a truck, mechanism forpropolling the truck, a sand projector mounted on the truck,means for'feeding sand to the projector, a conveyor movable with the truck and adapted to hold a plurality of flasks and successively deliver them into and out of filling position below the projector,

and mechanism on the truck for driving said conveyor.

16. In a machine for making molds, the combination of a truck, mechanism for propelling the truck, a sand projector mounted on the truck, means for, feeding sand to the projector, a conveyor movable with the truck and adapted to hold a plu1'ality of flasks and to successively deliver them into and out of filling position below the projec tor, mechanism for driving said conveyor and a motor on the truck connected to drive said conveyor.

17. In a machine for making molds, the combination of a CIUClQIHGOhiLIllSHl for pro polling the truck, a sand projectorniounted on the truck, means for feeding sand to the pro ector,.a conveyor movable with the truck and adapted to hold a plurality of flasks and successively deliver them into and out oi" filling position below the pi'o-jector,-1necl1anism for driving said conveyor, and a mo-.

'and successively deliver them into and out of filling osition below the projector, mechanism or driving said conveyor, and a motor on the truck connected to drive said conveyor and the propelling mechanism.

-projector, a rotary conveyor mounted Ton i- 2 19.111 'a; machine for making molds the comhination of a truck, mechanism for 'pr& pelllng the-truck, a sand projector mounted :mech'anism for driving said conveyor, and a' I ;111 a machine for lpelling the truck motor on the truck connected to drive said conveyor, the sand. feeding means and the propellingmechanism. a

making molds, the combination of'a truck, mechanismfor proasand projector mounted on the truckmechanisrn tobperatethe proj r to forcibly deliver-{sand into fl sk i means on the truck for feeding sand t th 1 :2 P j ctor, a rotary conveyor o b with the truck-to hold a" pluralityof flasksand to deliver them intoand out of fillil'lg posi '1 tion under the pr drivingsaid conveyor.

- 21. In -a machine for making .'molds,fthe

ejector, mechanism f or combination of'a truck, mechanism for propelling the truck, a sand-projector mounted,

. onthe truck mechanism to operate the pro je'ctor to forcibly deliver sand into flasks,

means onthe truck for feeding sandto the the truckto hold a pluralit'y of flasksi and to deliver' them intoand out 'of fi lling posi; -tion below the projector, and mechanism on -the' truck-for driving" said conveyor. I

a '22. In amachine formaking molds, the

for-feeding sand to the projector, a-rotary 1 mg said-geann 23. In a'mac b conveyor 'mounted' on] the truck to hold a and outer positionbelow the projector, gearing on v the truck for driving said plurality of flasks and to deliver them into 'conveyor,-.and a'motor on the truck-fordriv a a .7 i tmuously dnvmg'the conveyor.-

combination of'a truck, a sand projector:

;mounted on the truck, means on-the truck for feeding sand to the projector, a rotary conveyor mounted on the truck to hold a plurality'of flasks, and to deliver them into and out of filling position-below the projector, gearingon the truck for driving sa-id conveyor, and amotor on the truck for driv ving said gearing, and said sand feed-ing a 24. In a machine for' makin g molds, the

' "combination of a truck, mechanism for pro- .pelling the truck, a sand projector mounted.

- 0n the truck, means on the truck-for'feed-1 ing. sand to the projector, a rotary conveyor mounted on the truck toihold a plu'rahty of fiasksand. to deliver; them into and out of filling position below the projector, gear 1 ing on the truck'for driving sald conveyor lde motor on tru k projector, I r I v sand fromthe flasks anddeliver 'fOr-rec'on 1 combinati n: of a" sand projector,

combination of no" for imaking molds, the

flask, means to receive the spill from the propr'opelling J mechanism;

combination of a sandflfprojector, means to feed-sand. to the projector, means to support Pthe projector dor horizontal movement over and to deliver sand into all-jpdrtions' of a flask, and means receivef'the ,strike-ofi' 'veyance to theiprojec tor. I

2611111 1; m bliine" for making In.

x means to feed sand-'to'the-proj ector,fmeans to support the projector for horizontalmovement over and-to deliver s'and into all portions-not a flask, -a, conveyor "to receive j the strike-(iii? sand. from'the flasks and excess sand and de- I liver it for reconveyance to the" projector, and mechanismgifor continuously driving the oldsjfthe conveyor. Y

' 1 27. a machine'- for, making jmolds,[j the I a sandfprojecton fmeans to feed 'sand to the projector, means to 'mo'vably support the projector-for movementfover a; .flask, means to receive the "strike-01f sandfrom the flasks, and deliveritto saidfeed means,- and mechanism for conjointiy driving the feed-means and the receivingmeans.

In a maehine for making molds, the combination of a sandprojector', means to feed sand to theprojecton'means to movably support the projector {for movement over a flask, a rotary conveyor to receive the strikeofi sand from the flasks andfito deliver 'it formeconveyanc'eto the projector; andmech "combination of a, truck, a Sand p ojector aliis'm f d iving' a o moun'ted on the truck, means on the truck ,y j combination of. a} sand projector, means to I a'mach1neforf'makingfmolds; the

feedsand to the projector, means to" inovably support the projector fort -movement overa 1 ask, a rotary conveyor to receive the strike- 'off'sandfrom' the flasksanda to deliver it to the" feed-means, and. mechanism for conconveyorw adapted to receive tl1e-.'strikeI-ofi' sand fromthe flasks and-t0 deliver it to the elevator, and mechanism 'for' conj'ointly driving said conveyoriand'elevatoru I 31.-In' a machine formaking .moldsythe combination of a sand projector, means we feed'sand to the projector, 'means to support the projector for horizontal movement over, and to deliver-sand into all portions ofa jec'tor and to ,deliver the sand to the feed 1 means, and mechanism. for driving the receiv ng means; p e.

32;"In a machine for-'Inaking molds,'the combination Of fisand projector, means to feed sand :tothe projector, means to-'mov- 'vator, meansto movably support;the-prov jector for movement over a' fiask,-a" rotary ably support. the projector for movement over a flask, a rotary conveyort'o receive the" spill from the projector and deliver it tothe for driving the conveyor.

33. In 'a' machine for making molds, the combination of a sand pro ect or,-1ncans to feed sand to the projector, means to movi ably suj'iport the projector for movement over aflask, a conveyor for receivlng the spill from the projector and delivering it to.

' thefeedv means, and mechanism for conjointly and continuously driving the con-- veyor and the feed means;

34. In a machine for making combination of a truck, mechanism for propelling the truck, a sand projector on the truck, mechanism for-feeding sand to the projector, a conveyor movable with the truck toreceive the strike-oil? from the fiasks and,

carry itto the feed-means, and mechanism for driving the conveyor.

35. In a machine fOldlltLking molds, the combination of a truck, mechanism for'propolling the truck, a sand projector on the truck, mechanism for feeding sand to the projector, a disk movablewith' the truck to receive'the strike-ofi from the flasks and carry it to the feed means, andmechanism for driving the disk. 5 1.

86. In a machine for making molds, the combination of a truck, mechanism .ifor propolling the truck, a sand projector on the truck, mechanism for feedingsandto the )ro'ector a conve or moi nted on the truck 7 to receive the spill 'frointhe projector and carry it to the feed-means, and mechanism for driving the conveyor. I I

. 37. Ina machine for'making molds, tl1e combination of a truck, mechanism for pro-- polling the truck, a sandprojector on the truck, mechanism for feeding sand to the projector, a disk mounted on the truck to receive the spill from the projector and carry it to the feed-means, and mechanism for driving the disk.

38. In a machine for makin molds, the combination of a truck, me' lianism for propelling the truck, a sand "rojector on thetruck, mechanism for feed i the projector, a. conveyor mounted on the truck to receive the strike-oft sand from the flasks and-carry it to the feed-means, and mechanism on the truck for driving the conveyor;

39. In a machine for making molds, the

combination of a truck, mechanism h" propelling the truck, a sand projector on.

' and carry it tothe feed-means, and mechanism on the truck for driving the disk.

40. In a machine-for making molds, the

- combination of a vsandprojector, means to molds, theng sand to driving the; elevator.

feed sand to the projector. means to movably support-the pro ector for movement.

over a flask,j. a conveyor ]\'1()1U'1l-((l on the pro ector for rcconvevance, and mechan smv truck, and 'flask supports on the carrier, said conveyor having means to receive the strike-oil sand fromflasks and the spill from the projector" and to deliver it for reconveyance tothe'projectoix.

41. In .alnachine for making molds, the combination of a sand projector, meansto feed sand tothe'projector, means to movably support the projector for n'u'ivement over a flask," a rotary conveyor mounted on the truck; flask supports on the conveyor,

said conveyor having means toreceivethe strike-off sand from flasks andthe spill from the projector and'to deliverit for reconveyance to the projector, and mechanisn'i for driving the conveyor.

5 4.2. In a machine for making-molds, the combination of a sand pro ector, means'to feedsand tothe projector, means to movably support the projector for movement over a flask, a disk mounted on the truck, flask supports on the disk, said disk receiving the strike-off sand from flasks andthe spill from the projector and delivering. it

to the feed means, and means for driving flector over said conveyor, and mechanism.

for. driving the conveyor.

44." In a machine for, making moldsgthe combination of a truck, mechanism for propolling the truck, a sand projector movably mounte'don the'truck, mechanism for feeding sand to, the-projector, a rotatable conveyor mounted on the truck, flask-supports on the conveyor, movable into and out of filling position under the projector, the con veyor having means to receive the strike-off sand from the flasks and the s ill from the projector, a stationary sandeflector over said'conveyor, and mechanism for driving the conveyor.

45. In a machine for making molds, the combination of a laterally movable sand pro ector, a. sand elevator compr sing an endless chain and a pair of wheels spaced apart for supporting the upper portion of said" chain, a conveyor-chute having" a portion, thereof underlying the elevator between said wheels, so that the sand will be dumped directly into the chute, and mechanism for molds, the i pelling the truck, a sand projector movably mounted on the truck, a sand elevator on.

the truck and comprising an endless chain and a pair of wheels spaced apart for supporting the upper portion of said chain, a conveyor chute having a portion thereof nn derlying the elevator between said Wheels, so that the sand will be dumped directly into the chute, and mechanism for driving the elevator.

47. Ina machine for making molds, the combination of a laterallyanovable sand projector, means to feed sandto the projector comprising-an elevator and'a rotary disk, mechanism for driving the disk, and means to feed the sand from the disk to the elevator. a v

48. In a machine for making molds, the

combination of a trnck,a laterally movable sand projector on the truck, means on the truck to feed sand to the projector comprising an elevator provided with buckets and a rotary disk, meehanisln for driving the disk, and means to rake the sand from the disk to the elevator.

49. In a machine for making molds, the combination of a truck, means on the truck to deliver sand into a flask, mechanism for feeding. sand to the projector comprising a single endless chain vand buckets hxed on one side of said chain, and means for driving said chain andimeans to deliver sand to the unattached side of the buckets.

,50. In a machine'for makingmolds, the combination of a truck, a .lIlOVilblY; mounted sand projector on thctruck mechanism for feeding sand to theprojector comprising a single endless chain and lmekets fixc'doii one SlClO of 831d chain and a screw-conveyor terminating adjacent the other side of the to the projector-comprising a rotary table mounted on the truck, mechanism for driving the table, and a central support forthe table.

Signed at Chicago, Illinois, this 17th day.

ofJannary, 1922.

ELMER o. BEARDSLEY. WALTER r. PIPER. 

